Easy-to-install door lock with improved anti-torque effect for outside rose assembly

Abstract

A door lock includes a main body including a transmission assembly and a positioning assembly. The positioning assembly includes an inside seat and an outside seat. An inside rose liner is mounted around the inside seat and includes two positioning holes. An inside rose is mounted around the inside rose liner. An anti-torque ring is mounted around the outside seat and includes two lugs formed thereon. Two positioning posts respectively project from the lugs and extend along a longitudinal direction of the anti-torque ring. An outside rose liner includes an inner threading that is engaged with an outer threading of the outside seat. The outside rose liner includes a side with an annular recessed portion for receiving the anti-torque ring. The annular recessed portion includes two recess extensions for positioning the lugs of the anti-torque ring. An outside rose is securely mounted around the outside rose liner to rotate move therewith. Rotation of the outside rose causes longitudinal movement of the outside rose and the outside rose liner relative to the outside seat to suit different door thickness.

What is claimed is:  
     
       1. A door lock comprising: 
       a main body including a transmission assembly and a positioning assembly, the transmission assembly including an inside spindle, an outside spindle, a retractor, and a latch bolt, the positioning assembly including an inside seat and an outside seat, the outside seat including an outer threading;  
       an inside rose liner mounted around the inside seat;  
       an inside rose mounted around the inside rose liner;  
       an anti-torque ring mounted around the outside seat and including two lugs formed thereon, two positioning posts respectively projecting from the lugs and extending along a longitudinal direction of the anti-torque ring;  
       an outside rose liner including an inner threading that is engaged with the outer threading of the outside seat, the outside rose liner including a side with an annular recessed portion for receiving the anti-torque ring, the annular recessed portion including two recess extensions for positioning the lugs of the anti-torque ring, thereby preventing loosening of the outside rose liner;  
       an outside rose securely mounted around the outside rose liner to rotate move therewith;  
       an inside handle operably connected to the transmission assembly; and  
       an outside handle operably connected to the transmission assembly;  
       whereby rotation of the outside rose causes longitudinal movement of the outside rose and the outside rose liner relative to the outside seat to suit a thickness of a door to which the door lock is mounted.  
     
     
       2. The door lock as claimed in claim  1 , wherein the inside seat includes an outer threading having two diametrically disposed flat surfaces, the inside rose liner including a hole, an inner periphery that defines the hole of the inside rose liner including two diametrically disposed flat sections, the inside rose liner being mounted around the inside seat with the flat sections of the inside rose liner engaged with the flat surfaces of the inside seat. 
     
     
       3. The door lock as claimed in claim  1 , further comprising a pull-resisting ring mounted around the inside seat, the pull-resisting ring including an inner threading engaged with the outer threading of the inside seat. 
     
     
       4. The door lock as claimed in claim  1 , wherein the outside seat includes an outer threading having two diametrically disposed flat surfaces, the anti-torque ring including a hole, an inner periphery that defines the hole of the anti-torque ring including two diametrically disposed flat sections, the anti-torque ring being mounted around the outside seat with the flat sections of the anti-torque ring engaged with the flat surfaces of the outside seat. 
     
     
       5. The door lock as claimed in claim  1 , wherein the inside rose liner includes two positioning holes, each said positioning post including a screw hole aligned with an associated said positioning hole, further comprising two screws each extending through the associated positioning hole and the screw hole in an associated said positioning post. 
     
     
       6. The door lock as claimed in claim  3 , wherein the inside rose liner includes two diametrically disposed protrusions, and wherein the pull-resisting ring includes a plurality of annularly spaced depressions for releasably receiving the protrusions, thereby retaining the pull-resisting ring.